UNCCD1EA1CM24 Carlo Gavazzi

CLD1EA1CM24, Conductive Sensors 1-point Entry-level controller Model CL with potentiometer and time control, CLD1EA1CM24, Microprocessor-based level control for liquids with a wide sensitivity range from 5 KΩ to 150 KΩ. Level control with a probe with built-in ON/OFF time delay, for filling or emptying applications. The time delay can be adjusted from 1 to 30 seconds., CLD1EA1CM24, Connection cable 2-conductor PVC cable, normally shielded. Cable length: max. 100 m. The resistance between the conductive wire and ground must be at least 150K. Normally, it is recommended to use a shielded cable between the probe and the relay, for example, if the cable is placed in parallel with the power (network) cables. The shielding has to be connected to Y2 (reference). The filling or emptying process works around a single electrode and a time control circuit. Precautions: Overflow of the tank filling Precautions must be taken to ensure that the tank does not overflow. The factors to consider are the performance of the pump, the discharge rate of the tank, the position of the single level electrode and the time delay. Avoid dry running of the pump in the drain It is necessary to ensure that the pump does not run dry, taking precautions similar to those mentioned above. In particular, by keeping the time delay at a minimum level, the risks are reduced, although the switching speed will increase. Example 1 The diagram shows the connected level control as a fill or empty control. The relay reacts to the low alternating current generated when the electrodes are in contact with the liquid. The reference (Ref) must be connected to the tank, or if the tank is made of a non-conductive material, to an additional electrode. (It will connect to the Y2 pin.) (In the diagram, such an electrode is indicated by a dotted line.)